The takeover takes place on Saturday 31 May from 2pm-11.30pm, and there is an intimate after party from 11.30pm-2.30, with more acts to be announced between now and the end of May.
Tickets are £25, or there are limited 'golden tickets' at £40 +P&P. The bundle will arrive by post in late May/early June, so you don't have to carry it around at the gig, available now from the Roundhouse website.